<template>
  <view class="cart-container" v-if="cart.length!==0">
    <!-- 收货地址区域 -->
      <my-address></my-address>
    <!-- //收货地址区域 -->
    <!-- 购物车商品列表标题区域 -->
    <view class="cart-title">
        <!-- 左侧的图标 -->
        <uni-icons type="shop" size="18"></uni-icons>
        <!-- 描述文本 -->
        <text class="cart-title-text">购物车</text>
    </view>
    <!-- /购物车商品列表标题区域 -->
 
    <!-- 左滑删除组件 -->
    <uni-swipe-action>
       <!-- 循环渲染购物车商品列表 -->
        <block class="" v-for="(goods,i) in cart" :key='i'>
          <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
              <my-goods :goods="goods"
              :showRadio="true" 
              @radio-change='radioChangeHandler' 
              :showNum="true" 
              @num-change='numberChangeHandler'></my-goods>
          </uni-swipe-action-item>
       </block>
      <!-- //循环渲染购物车商品列表 -->
    </uni-swipe-action>
     <!-- //左滑删除组件 -->
     
     <!-- 结算组件 -->
     <my-settle></my-settle>
     <!-- //结算组件 -->
  </view>
    <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
</template>

<script>
   import badgeMix from '@/mixins/tabbar-badge.js'
   import {mapState,mapMutations} from 'vuex'
  export default {
    mixins:[badgeMix],
    computed:{
      ...mapState('m_cart',["cart"])
    },
    data() {
      return {
        // 左滑删除的配置信息
          options:[{
            //显示文本内容
            text:'删除',
            style:{
              backgroundColor:'#C00000'
            }
          }]
      };
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        this.updateGoodsState(e)
      },
      //商品数量发生了变化的方法
      numberChangeHandler(e){
        // console.log(e)
        this.updateGoodsCount(e)
      },
      //点击了左滑删除按钮
      swipeActionClickHandler(goods){
        // console.log(goods)
        //调用vuex里面的删除购物车商品的方法
        this.removeGoodsById(goods)
      }
    }
   
  }
</script>

<style lang="scss">
.cart-container {
  padding-bottom: 50px;
}
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
